Cylinder Specifications - Baxi Solarflo Installation Manual

Fig. 7
Unvented system - schematic diagram
Note: Indirect twin coil unit shown.
8 Solarflo - Solar Thermal Domestic Hot Water System
6.0

Cylinder specifications

6.0 Unvented
Nominal capacities 190, 210, 250 and 300 litre.
Rating Immersion heater(s) 1 x 3 kW (indirect models),
2 x 3kW (direct models) @ 240V~.
Outer casing White plastic coated corrosion proofed
steel.
Thermal insulation CFC/HCFC-free (ODP zero)
flame-retardant expanded polyurethane (50mm thick).
GWP 3.1 (Global Warming Potential).
Water container Duplex 2304 (Grade 1.4362 EN
10088) stainless steel.
Pressure testing To 15 bar.
Heat unit Long-life Superloy 825 alloy sheathed
element/s, incorporated into an easily removable heater
plate, should replacement be necessary. Rated 3.0kW @
240V~.
Primary coil (for Auxiliary boiler heating) 22mm
diameter stainless steel. Coil in coil design for improved
performance
Solar coil 25mm diameter stainless steel. Coil in coil
design and large surface area for improved performance.
Thermostat
Direct models: Element thermostat adjustable from
10°C to 70°C.
Indirect models: Factory-fitted cylinder thermostat
adjustable to 70°C.
Solar: Factory fitted control pocket suitable for
insertion of solar controller temperature probe.
Factory fitted safety features:
Direct models: Manually re-settable cut-out on heating
element operates at 85°C.
Indirect models: High limit thermal cut-out operates at
85°C.Wired in series with two-port motorised valve
(supplied) to provide primary over temperature
protection when using auxiliary (boiler) coil.
All models: Temperature and Pressure Relief Valve,
factory set to operate at 10 bar and 90°C.
High limit thermal cut-out operating at 85°C at solar coil
position.Wired in series with the solar differential
temperature controller to provide over temperature
protection if overheating occurs from solar collector panels.
N.B.This must be used in an unvented installation to
comply with the requirements of Building Regulation G3.
Anode Not required.
For full technical and performance specification see
cylinder installation instructions.
The cylinders are unvented so installation must
comply with Building Regulation G3.
Baxi recommend the use of the Heatrae Sadia
Megatech Unvented and Megalife vented
cylinders. The use of other cylinders may
not satisfy the requirements of Building
Regulation G3.